All students entering the seventh through the twelfth grades must provide proof of a whooping cough immunization before they can enroll in classes. To encourage compliance with the new state law, the Los Angeles Unified School District (LAUSD) will offer several free clinics for schools scheduled to start in early August.

As the peak of whooping cough season and the school year approach, California public health officials are pushing parents to get middle and high school students vaccinated against the highly infectious illness.